Yep. IIRC he said if the ammo behaved in the tropics for that .256 he wouldn't use much else. Likewise IIRC he said the .318 with heavy bullets was probably the best of the elephant killers. Shots from the .275 once in a while would not kill as intended. No apparent reason other than the bullets path apparently veered inside the elephants skull. He said with the .318s that that particular problem went away completely.
